Securing device for concrete forms



I Feb. 20, 1940. c w s 7 2,190,748

S ECURING DEVICE FOR CONCRETE FORMS Filed Jan. 13, 1937 v fiwen ZWzkzess4 l "u Patented Feb. 20, 1940 1 UNITED STATES PATENT OFFECE 2,190,748 1v SECURHNGD'EVICE FOR CONCRETE FOR-MS Chester I. Williams, Grand Rapids,Mich.

Application January 13, 1937, Serial No. 120,412

1 Claim.

A particular object of the inven tion is the provision of improvedfastening devices whichare adapted to secure oppositely disposed formmembers together by means operable from the outside of the forms.

Another object of the invention is the provision of improved fasteningdevices whereby oppositely positioned concrete form members maybe spacedin their operative position by manipulation of the devices from theoutside of the form.

A further object of the invention is the provision of improved fasteningdevices of the kind described which are removable from the forms.-without injury either to the forms or to the devices. I

Still another object of the invention is the provision of an improvedfastening device of the kind described which is inexpensive, simple,

easily installed and satisfactory for its intended purpose.

Many other objects and advantages of the construction herein shown anddescribed will be obvious to those skilled in the art from thedisclosure herein given.

To this end my invention consists in the novel construction, arrangementand combination of parts herein shown and described and more par"ticularly pointed out in the claim.

Referring now to the drawing forming part of the specification:

Fig. 1 is a perspective view of a fragmentary 'elevational section takenthrough a concrete :form and showing the opposite walls of the formsecured together by a device embodying the principles of my invention;

Referring now more particularly to the draw-.

ing, the numeral 10 designates a plurality of closely spaced boardsproviding oppositely positions, the burs providing stops contacting withbackof the studs II to the inner face of the tioned form members, theboards of each form member being connected by nails or the like withexteriorly positioned vertically extending studs H and the studs beingconnected by lon- H gitudinally extending 'waler members l2.

Theforms can be of any desired height and length and the oppositelypositioned form members are adapted to be dismantled and used regetherby aplurality of fastening devices similar ing imbedded in theconcreteupon dismantling of the forms. The tie rods l5 are provided withburs ll adjacent their threaded end por- 25 the ends of the elongatedmembers l3 when the. tie rod has been threaded substantially the fulllength of the sockets l6. k The elongated members l3 are preferably ofuniform diameter throughout their length except at their inner endswhere they taper slightly and their diameter is slightly greater thanthat of the rod l5. In mounting a device on the form, the rod i5 and themembers [3 assembled as shown, are projected through aligned holesprovided in the boards I0 adjacent to a stud H and waler members l2 ofboth the oppositely positioned form members. The members I3 each have agroove l8 adapted as a guide to indicate when the form members have beenbrought into spaced relation corresponding to the required thickness ofthe wall to be poured. The distance from the such rotation of themembers l3 as might otherwise occur when threading the end brackets I 4into clamping engagement with the waler members [2. The brackets I4 arepreferably fastened in vertical position in engagement with the walermembers l2 by nails 25 driven into the members through apertures 2?provided in the brackets for that purpose, it being understood that thenails are removed before attempting to rotate and release the members [3by either of the methods hereinbefore described.

The brackets Id have a central boss 2| exterio-rly bounded by an angularsurface adapted to receive a socket wrench by means of which thebrackets are threaded on and ofi the projecting ends 23 of the membersl3. The threaded ends 23 of the members i3 are ofiset'to provide ashoulder 24 with which the bracket l4 contacts. The boss 2! has aconcentric counter-sink or socket 22 adapted to receive a ratchet wrenchor the like for engagement with the projecting end portion 23 of themember 53 whereby the niember may be rotated for dismantling after thenails 2E3 have been removed and the concrete has hardened or set. Forthis purpose the projections 23 are threaded opposite hand to thethreads on the ends of the tie rods l5 and, as a result, if the wrenchis threaded onto the projection 23 and into engagement with the bracketl*i, when the bracket is in contact with the shoulder 24, continuedrotation of the wrench will break the bond of the concrete with themember I 3 and cause rotation of the member in a direction to disengageit from threaded connection with the tie rod 15. The brackets I4 arealso provided with reinforced end portions 28 to permit the use of ahammer to rotate the bracket without injury thereto in case it isdesired to rotate the member I3 otherwise than by a wrench threaded ontothe end portion. 23 thereof as above described.

Thus it will be seen that I have provided a novel, inexpensive, simple,and durable assembly of members adapted as a securing device of the kinddescribed which, except for the middle tie rod portions, may be quicklyand easily removed from the forms and used repeatedly in the mannerdescribed.

Having thus described my invention, it is obvious that variousimmaterial modifications may be made therein without departing from thespirit of my invention, hence I do not wish to be understood as limitingmyself to the exact form, construction, arrangement and combina- 1 tionof parts herein shown and described or uses mentioned.

What I claim asnew and desire to secure by Letters Patents is:

A device for securing oppositely positioned concrete form members infixed spaced apart relation, said device comprising an elongated strutand end brackets, said strut consisting of an intermediate sectionhaving threaded ends and of end sections having a limited threadedconnection with the intermediate section and an oppositely threadedconnection with the adja cent brackets, the outer threaded ends of" saidend sections being offset to provide a shoulder against which thebracket is adapted to abut when the device is assembled, said bracketseach providing means for attachment of a wrench whereby the brackets areadapted to be rotated in one direction to accomplish full threadedengagement and abutting relation with the adjacent shoulder when thedevice is assembled, and by continued rotation in the same direction thebracket is adapted to rotate the end section .i

CHESTER I. WILLIAMS.

